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Technology

About Gyro Sensor

What is MEMS GYRO Sensor?

  • Gyro sensor detects an angular velocity per unit time.
  • It is also known as Gyroscope or (Angular) Rate Sensor.
  • Accuracy is expressed in unit of “deg/sec” or “deg/h”.
  • Angle position is calculated by integrating the angular velocity.
What is MEMS GYRO Sensor?

Gyro Sensor Line-up

Gyro Sensor Line-up

About our MEMS Gyro and IMU

Principle of MEMS Gyro

Principle When the angular velocity is applied to a mass with a speed, the Coriolis force occurs in the direction at a right angle to both speed direction and rotation axis.

Our MEMS gyro vibrates the element in the shape of a tuning fork and detects the electricity produced by change of vibration mode by Coriolis force applied from rotational motion with the electrode which is placed on the sensor element.

MEMSジャイロの原理

Principle of FOG (Fiber Optic Gyro )

Principle A fiber optic gyroscope (FOG) detects the changes in orientation using the interference of light, which is created by two beams injected into the same fiber in opposite directions. The angular velocity is translated as the pattern of interference which is measured.
Principle of FOG (Fiber Optic Gyro )

Principle of RLG (Ring Laser Gyro )

Principle A ring laser gyro (RLG) consists of a optical resonator, laser mirror & narrow glass tubule, where two laser beam are generated in CW and CCW by discharge of He-Ne. When the angular velocity is applied, a displacement of frequency of laser beam is made on a principle of Sagnac effect. A ring laser gyro (RLG) measures the displacement by counting a number of prismatic interference fringes.
Principle of RLG (Ring Laser Gyro )